-sinclude(../config/accross.m4)
-sinclude(../config/acx.m4)
-sinclude(../config/no-executables.m4)
-
-dnl See whether strncmp reads past the end of its string parameters.
-dnl On some versions of SunOS4 at least, strncmp reads a word at a time
-dnl but erroneously reads past the end of strings. This can cause
-dnl a SEGV in some cases.
-AC_DEFUN(libiberty_AC_FUNC_STRNCMP,
-[AC_REQUIRE([AC_FUNC_MMAP])
-AC_CACHE_CHECK([for working strncmp], ac_cv_func_strncmp_works,
-[AC_TRY_RUN([
-/* Test by Jim Wilson and Kaveh Ghazi.
- Check whether strncmp reads past the end of its string parameters. */
-#include <sys/types.h>
-
-#ifdef HAVE_FCNTL_H
-#include <fcntl.h>
-#endif
-
-#ifdef HAVE_SYS_MMAN_H
-#include <sys/mman.h>
-#endif
-
-#ifndef MAP_ANON
-#ifdef MAP_ANONYMOUS
-#define MAP_ANON MAP_ANONYMOUS
-#else
-#define MAP_ANON MAP_FILE
-#endif
-#endif
-
-#ifndef MAP_FILE
-#define MAP_FILE 0
-#endif
-#ifndef O_RDONLY
-#define O_RDONLY 0
-#endif
-
-#define MAP_LEN 0x10000
-
-main ()
-{
-#if defined(HAVE_MMAP) || defined(HAVE_MMAP_ANYWHERE)
- char *p;
- int dev_zero;
-
- dev_zero = open ("/dev/zero", O_RDONLY);
- if (dev_zero < 0)
- exit (1);
-
- p = (char *) mmap (0, MAP_LEN, PROT_READ|PROT_WRITE,
- MAP_ANON|MAP_PRIVATE, dev_zero, 0);
- if (p == (char *)-1)
- p = (char *) mmap (0, MAP_LEN, PROT_READ|PROT_WRITE,
- MAP_ANON|MAP_PRIVATE, -1, 0);
- if (p == (char *)-1)
- exit (2);
- else
- {
- char *string = "__si_type_info";
- char *q = (char *) p + MAP_LEN - strlen (string) - 2;
- char *r = (char *) p + 0xe;
-
- strcpy (q, string);
- strcpy (r, string);
- strncmp (r, q, 14);
- }
-#endif /* HAVE_MMAP || HAVE_MMAP_ANYWHERE */
- exit (0);
-}
-], ac_cv_func_strncmp_works=yes, ac_cv_func_strncmp_works=no,
- ac_cv_func_strncmp_works=no)
-rm -f core core.* *.core])
-if test $ac_cv_func_strncmp_works = no ; then
- AC_LIBOBJ([strncmp])
-fi
-])
-
-dnl See if errno must be declared even when <errno.h> is included.
-AC_DEFUN(libiberty_AC_DECLARE_ERRNO,
-[AC_CACHE_CHECK(whether errno must be declared, libiberty_cv_declare_errno,
-[AC_TRY_COMPILE(
-[#include <errno.h>],
-[int x = errno;],
-libiberty_cv_declare_errno=no,
-libiberty_cv_declare_errno=yes)])
-if test $libiberty_cv_declare_errno = yes
-then AC_DEFINE(NEED_DECLARATION_ERRNO, 1,
- [Define if errno must be declared even when <errno.h> is included.])
-fi
-])
-
-dnl See whether we need a declaration for a function.
-AC_DEFUN(libiberty_NEED_DECLARATION,
-[AC_MSG_CHECKING([whether $1 must be declared])
-AC_CACHE_VAL(libiberty_cv_decl_needed_$1,
-[AC_TRY_COMPILE([
-#include "confdefs.h"
-#include <stdio.h>
-#ifdef HAVE_STRING_H
-#include <string.h>
-#else
-#ifdef HAVE_STRINGS_H
-#include <strings.h>
-#endif
-#endif
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif],
-[char *(*pfn) = (char *(*)) $1],
-libiberty_cv_decl_needed_$1=no, libiberty_cv_decl_needed_$1=yes)])
-AC_MSG_RESULT($libiberty_cv_decl_needed_$1)
-if test $libiberty_cv_decl_needed_$1 = yes; then
- AC_DEFINE([NEED_DECLARATION_]translit($1, [a-z], [A-Z]), 1,
- [Define if $1 is not declared in system header files.])
-fi
-])dnl
-
-# Work around a bug in autoheader. This can go away when we switch to
-# autoconf >2.50. The use of define instead of AC_DEFUN is
-# deliberate.
-define(AC_DEFINE_NOAUTOHEADER,
-[cat >> confdefs.h <<\EOF
-[#define] $1 ifelse($#, 2, [$2], $#, 3, [$2], 1)
-EOF
-])
-
-# We always want a C version of alloca() compiled into libiberty,
-# because native-compiler support for the real alloca is so !@#$%
-# unreliable that GCC has decided to use it only when being compiled
-# by GCC. This is the part of AC_FUNC_ALLOCA that calculates the
-# information alloca.c needs.
-AC_DEFUN(libiberty_AC_FUNC_C_ALLOCA,
-[AC_CACHE_CHECK(whether alloca needs Cray hooks, ac_cv_os_cray,
-[AC_EGREP_CPP(webecray,
-[#if defined(CRAY) && ! defined(CRAY2)
-webecray
-#else
-wenotbecray
-#endif
-], ac_cv_os_cray=yes, ac_cv_os_cray=no)])
-if test $ac_cv_os_cray = yes; then
- for ac_func in _getb67 GETB67 getb67; do
- AC_CHECK_FUNC($ac_func,
- [AC_DEFINE_UNQUOTED(CRAY_STACKSEG_END, $ac_func,
- [Define to one of _getb67, GETB67, getb67 for Cray-2 and Cray-YMP
- systems. This function is required for alloca.c support on those
- systems.]) break])
- done
-fi
-
-AC_CACHE_CHECK(stack direction for C alloca, ac_cv_c_stack_direction,
-[AC_TRY_RUN([find_stack_direction ()
-{
- static char *addr = 0;
- auto char dummy;
- if (addr == 0)
- {
- addr = &dummy;
- return find_stack_direction ();
- }
- else
- return (&dummy > addr) ? 1 : -1;
-}
-main ()
-{
- exit (find_stack_direction() < 0);
-}],
- ac_cv_c_stack_direction=1,
- ac_cv_c_stack_direction=-1,
- ac_cv_c_stack_direction=0)])
-AC_DEFINE_UNQUOTED(STACK_DIRECTION, $ac_cv_c_stack_direction,
- [Define if you know the direction of stack growth for your system;
- otherwise it will be automatically deduced at run-time.
- STACK_DIRECTION > 0 => grows toward higher addresses
- STACK_DIRECTION < 0 => grows toward lower addresses
- STACK_DIRECTION = 0 => direction of growth unknown])
-])
-
-# AC_LANG_FUNC_LINK_TRY(C)(FUNCTION)
-# ----------------------------------
-# Don't include <ctype.h> because on OSF/1 3.0 it includes
-# <sys/types.h> which includes <sys/select.h> which contains a
-# prototype for select. Similarly for bzero.
-#
-# This test used to merely assign f=$1 in main(), but that was
-# optimized away by HP unbundled cc A.05.36 for ia64 under +O3,
-# presumably on the basis that there's no need to do that store if the
-# program is about to exit. Conversely, the AIX linker optimizes an
-# unused external declaration that initializes f=$1. So this test
-# program has both an external initialization of f, and a use of f in
-# main that affects the exit status.
-#
-m4_define([AC_LANG_FUNC_LINK_TRY(C)],
-[AC_LANG_PROGRAM(
-[/* System header to define __stub macros and hopefully few prototypes,
- which can conflict with char $1 (); below.
- Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
- <limits.h> exists even on freestanding compilers. Under hpux,
- including <limits.h> includes <sys/time.h> and causes problems
- checking for functions defined therein. */
-#if defined (__STDC__) && !defined (_HPUX_SOURCE)
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-/* Override any gcc2 internal prototype to avoid an error. */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
- builtin and then its argument prototype would still apply. */
-char $1 ();
-/* The GNU C library defines this for functions which it implements
- to always fail with ENOSYS. Some functions are actually named
- something starting with __ and the normal name is an alias. */
-#if defined (__stub_$1) || defined (__stub___$1)
-choke me
-#else
-char (*f) () = $1;
-#endif
-#ifdef __cplusplus
-}
-#endif
-], [return f != $1;])])
-
+# generated automatically by aclocal 1.15.1 -*- Autoconf -*-
+
+# Copyright (C) 1996-2017 Free Software Foundation, Inc.
+
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])])
+m4_include([../config/acx.m4])
+m4_include([../config/cet.m4])
+m4_include([../config/enable.m4])
+m4_include([../config/gcc-plugin.m4])
+m4_include([../config/hwcaps.m4])
+m4_include([../config/no-executables.m4])
+m4_include([../config/override.m4])
+m4_include([../config/picflag.m4])
+m4_include([../config/warnings.m4])
+m4_include([acinclude.m4])
projects / thirdparty / gcc.git / blobdiff